51481151 has 8 divisors (see below), whose sum is σ = 55040544. Its totient is φ = 47980800.

The previous prime is 51481147. The next prime is 51481159. The reversal of 51481151 is 15118415.

51481151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51481151 - 2² = 51481147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51481151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51481159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12950 + ... + 16451.

It is an arithmetic number, because the mean of its divisors is an integer number (6880068).

Almost surely, 2^51481151 is an apocalyptic number.

51481151 is a deficient number, since it is larger than the sum of its proper divisors (3559393).

51481151 is a wasteful number, since it uses less digits than its factorization.

51481151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29521.

The product of its digits is 800, while the sum is 26.

The square root of 51481151 is about 7175.0366549586. The cubic root of 51481151 is about 372.0055472831.

Adding to 51481151 its reverse (15118415), we get a palindrome (66599566).

The spelling of 51481151 in words is "fifty-one million, four hundred eighty-one thousand, one hundred fifty-one".